Pretty good. Needs work.
I like it. Good thing to make. But a problem with your sound. I noticed you can play more than one track at once. But if you stop one. You have it set to stop all tracks. Kinda ruins the Mix-n-Match factor. Thats why the sound score is low. Good entry though. Would like to see version more worked on. Also, try and make it more appealing. Its just kinda cluttered looking to me.